Mr. Peabody Costume
Dress up as the world's smartest, time-traveling beagle.
Mr. Peabody is the genius, time-traveling beagle from the classic cartoons and the animated film Mr. Peabody & Sherman. Dressing up as this sophisticated canine is a popular choice for fans of classic animation and makes for an incredibly easy DIY project. The look relies on a clean white base, round black glasses, and his signature red bow tie.
- Difficulty
- Easy
- Time
- ~30 min
- Budget
- $15–45
Try it on
See yourself as Mr. Peabody
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.
Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.
What you need for a Mr. Peabody costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Mr. Peabody costume — one box instead of 5 pieces.
White hooded sweatshirt
A plain, solid white pullover hoodie to serve as the dog's white fur body.
DIY: Use any plain white long-sleeve shirt and a white beanie instead.
White sweatpants
Matching solid white sweatpants to complete the all-white canine body.
DIY: Wear white jeans or white leggings.
Red bow tie
A classic pre-tied red satin bow tie worn snugly around the collar.
DIY: Cut a bow shape out of red felt and safety-pin it to your collar.
Round black glasses
Thick-rimmed, perfectly round black costume glasses with no lenses or clear lenses.
DIY: Pop the lenses out of cheap round sunglasses or use black face paint to draw them.
White and black felt
Stiff felt sheets to construct floppy white dog ears with black interior accents.
DIY: Use clean white socks stuffed lightly with cotton and pinned to the hood.
Rather not assemble it? See ready-made Mr. Peabody costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the white sweatpants and the white hooded sweatshirt.
- 2
Cut two long, floppy teardrop shapes out of the white felt to act as beagle ears.
- 3
Sew or safety-pin the felt ears to the sides of the sweatshirt's hood so they hang down.
- 4
Fasten the red bow tie around the neck of the sweatshirt, ensuring it sits centered.
- 5
Put on the round black-rimmed glasses.
- 6
Pull the hood up over your head to display the floppy dog ears.
Makeup & hair
Keep your hair completely tucked inside the white hood. Use black face paint or eyeliner to draw a small, round dog nose on the tip of your nose.
Mr. Peabody for couples, groups, kids & more
- couples
- Pair up with someone dressed as Sherman in a white tee, round glasses, and orange hair.
- group
- Add Penny Peterson in her school outfit and a third person as the WABAC time machine.
- kids
- Use a white toddler onesie, attach felt ears to a white baby hat, and add a felt red bow tie.
- Plus size
- Use an oversized white fleece crewneck and matching joggers for a comfortable, relaxed fit.
- pet
- Put a simple red bow tie and lightweight black glasses frames on a white dog.
Tips
- Keep the hood up during photos so your DIY floppy beagle ears are fully visible.
- Choose a hoodie with a spacious hood so it doesn't pull down on your forehead or obscure the glasses.
- Wear white sneakers to keep the seamless all-white dog aesthetic from head to toe.
Mr. Peabody costume FAQ
- What does Mr. Peabody wear?
- Mr. Peabody is a white beagle who wears only a red bow tie and round black glasses.
- How do you make DIY Mr. Peabody ears?
- You can cut long, floppy ear shapes out of white felt or use a pair of white socks, then sew or safety-pin them to the sides of a white hood or headband.
- Is this costume good for groups?
- Yes, it is perfect for a duo with Sherman, or a trio including Penny Peterson.
Did you know? Mr. Peabody first appeared in 1959 on 'The Rocky and Bullwinkle Show' in the 'Peabody's Improbable History' segments.